code: def setUp(self):
      self.pd_df = pd.DataFrame(
          {
              "A": [1, 2, 3],
              "B": ["foo", "bar", "baz"],
              "C": [1.0, 2.0, 3.0],
          }
      )
      self.pl_df = None
      if "pl" in globals():
          self.pl_df = pl.DataFrame(
              {
                  "A": [1, 2, 3],
                  "B": ["foo", "bar", "baz"],
                  "C": [1.0, 2.0, 3.0],
              }
          )
  
file_path: pandas-ai/tests/test_df_info.py
imports: import unittest
  import pandas
  import polars
  from pandasai.helpers.df_info import df_type
label_desc: Use image node_id 1 for calling the TestDfInfo obj's underlying member method code with example usage: obj.setUp() without return types